-Scientist, CGAR, an ecoregional Approach to Research and Development in the Humid / subhumid Tropics and Subtropics of Asia
-Scientis and Coordinator, Systems Analysis and Simulation for Rice Production Project in Asia, International Rice Research Institute
-Hydrologist, DENR Rainfed Resources Development Project (RRDP)
-Program Leader, DA - UPLB - CIRDUP Programm on Assessment of Surface Water potential for irrigation Development
-Project Leader, ICRAF - SEARCA - UPLB - Adb project on Sustainability Criteria for Land Use Options in Hilly Uplands
-Project Leader, IWMI - Ku project on Exploratory analysis of Multiple Use Options for Land and Water Resources management in the Mae Klong River basin, Thailand
-Principal investiator and Team Leader for Philippines, SysNet project

- The Outstanding Young Men in Agricultural and Environmental Statistics
- Most outstanding Alumnus, Colleg of Arts and Sciences
The Outstanding Young Scientist, National Academy of Science and Technology

Other Activities

-Member, International Scientific Steering Commitee, Land Use and Cover Change
-Member, Executive Board, Asian Federation for Information Technology in Agriculture
-Lead Author; IPCC Third Assessment Report on Climate Change
-President, Gamma Sigma Delta Honor Society of Agriculture
-Member, national Research Council of the Philippines